Merge github.com:grpc/grpc into delayed-write

BUILD

CMakeLists.txt

Makefile

build.yaml

doc/compression_cookbook.md

doc/images/compression_cookbook_incoming.png

doc/images/compression_cookbook_outgoing.png

examples/csharp/helloworld/README.md

gRPC.podspec

package.json

package.xml

src/core/ext/transport/chttp2/transport/chttp2_transport.c

src/core/ext/transport/chttp2/transport/internal.h

src/core/ext/transport/chttp2/transport/parsing.c

src/core/ext/transport/chttp2/transport/status_conversion.c

src/core/ext/transport/chttp2/transport/status_conversion.h

src/core/lib/surface/call.c

src/core/lib/surface/version.c

src/csharp/Grpc.Auth/project.json

src/csharp/Grpc.Core/VersionInfo.cs